EP3135824B1 - Upper structure for a construction machine - Google Patents

Description

The invention relates to a superstructure for a construction machine with a housing having side walls, wherein for access into the housing at least one housing opening is provided with an access wall, which is adjustable by means of an adjusting mechanism in an open position, and in a region in front of the housing opening a horizontal Catwalk is formed.

Such superstructure are used for example in Erdbohrgeräten or other Erdbearbeitungsmaschinen. These construction machines usually have a chassis, in particular a crawler undercarriage, as an undercarriage, on which a superstructure is arranged fixed or rotatable. The superstructure can thus have a considerable distance from the ground surface. Depending on the size of the undercarriage this can usually be 1 to 2 m and more. In the superstructure usually the drive units are arranged, such as a diesel engine, hydraulic pumps, a power generator or other drives for winches. For maintenance and repair purposes, therefore, a good and safe access to the housing of the superstructure is required.

From the DE 10 2009 050 189 A1 is a construction machine with an upper carriage known in which housing parts are hinged upwards. A side walkway with fall protection is fixedly arranged along the flanks of the housing. However, such fixed walkways reduce either the space in the housing or increase the external dimensions of the construction machine.

A superstructure with a foldout catwalk goes out of the JP 6-85148 A1 out. The catwalk is formed as a grid, which is externally applied to a side wall. For the construction of the catwalk props are auszuschwenken and the grate is to be folded down. An external grid affects the appearance of the superstructure and is also exposed to pollution unprotected.

From the SU 546555 A1 is a wheeled vehicle with a generic superstructure known in which a sliding sideways rails, which can be referred to as telescopic rails, a side wall is pulled out horizontally. After removal, a vertically placed base plate can be folded out horizontally.

A construction machine with a crawler chassis as an undercarriage and a rotatably mounted superstructure goes about from the EP 2 216 238 A1 out. In this superstructure vertical side walls are vertically movable upwards via an adjustment mechanism. An inner protected catwalk can then be folded down to a horizontal position to form a horizontal catwalk. The catwalk can be formed only after the opening of the access wall, which can be problematic for the handling and safety of the operator.

The invention has for its object to provide a superstructure, which allows for a simple and compact design a lightweight and safe construction of a catwalk.

According to the invention, the object is achieved by a superstructure with the features of claim 1. Preferred embodiments of the invention are indicated in the dependent claims.

In the superstructure according to the invention at least one pullout element is provided, which is mounted horizontally extendable between a retraction position and an extract position, in which the extract element
projecting horizontally from the housing, and that for forming the catwalk on the extension element, a bottom plate is provided.

A basic idea of the invention is to provide a horizontally extendable extract element on at least one of the substantially vertical side walls. In the retracted position, the extension element is stored in a space-saving manner in or on the housing. A horizontal extension or insertion is to effect even with large and heavy pullout elements with relatively low forces. This can be done by motor or manually. The pull-out element is extensible so that there is enough room for a catwalk for the operating personnel.

In principle, any desired displacement mechanism can be provided for the horizontal displacement of the extension element. A particularly simple and robust arrangement is achieved according to the invention in that at least two telescopic rails are provided, with which the pull-out element is mounted extendable. The two telescopic rails are provided in the lateral outer areas of the pull-out element, so that this can be pulled out horizontally, similar to a drawer. For larger lengths of the extension element, one or more telescopic rails may be provided in a central region. A telescopic rail preferably comprises a hollow rail fastened to the superstructure, in which an inner rail is mounted so as to be axially displaceable. The pull-out element is attached to the moveable inner rail.

According to the invention, the pull-out element has a side wall element which forms part of the access wall. In the horizontally extended opening position, this side wall element further has a substantially vertical position and can thus preferably form a parapet or a part of the parapet as fall protection on the catwalk. Preferably, the side wall element in the retraction or closure position is external and thus forms part of the outer access wall, so the side wall of the housing. However, the side wall element can also be arranged on the inside and be concealed by an outer removable or adjustable outer wall element of the access wall.

A preferred embodiment of the invention is further to be seen in that the bottom plate is mounted on or on the at least two telescopic rails. The telescopic rails are thus formed as a support bracket or support frame for the bottom plate and thus the catwalk. Further or additional support elements are not absolutely necessary in this embodiment.

According to a further embodiment of the invention, it is preferred that the bottom plate is attached to the telescopic rails and extendable with the pulling of the pull-out element. The bottom plate is preferably fixedly arranged on the telescopic rails and is also in the closed position in a horizontal arrangement in or on the housing. By extending the pull-out element so a finished catwalk is formed, with a vertically standing side wall element can serve as a parapet for lateral fall protection.

A compact arrangement is achieved according to another embodiment of the invention by the fact that the bottom plate can be attached to this after mounting the pull-out element. The bottom plate can be stored as a separate part at another location, and is placed only when pulled-extract element to create the catwalk. Preferably, the bottom plate can be arranged approximately hinged on an inner side of the side wall element. Thus, the bottom plate in the retracted position can be directed vertically parallel to the side wall element. In the extended position, the bottom plate can then be folded away from the side wall element in the horizontal position on the telescopic rails. Alternatively, the base plate itself may be formed as a telescopic plate.

The access wall is made up of several wall elements. The individual wall elements can be arranged side by side to form a multi-layer access wall one behind the other. It is according to the invention that for forming the access wall above the side wall element, an upper wall element is provided, which is hinged or slidably mounted to open. The upper wall element can be pushed or folded approximately vertically upwards in order to form a parapet element on the ceiling area.

According to the invention, it is particularly advantageous that the upper wall element forms a protective roof over the catwalk in the open position. For this purpose, the upper wall element hinged at its top hinged to the ceiling portion of the superstructure and so moved in an oblique or folded position upwards and fixed there with a locking mechanism. In this way, with the housing open by the catwalk with parapet and the canopy a weather conditions particularly protected working space can be formed. An adjusting mechanism for the access wall thus comprises in this case the extendable extract element with the lower side wall part and a folding mechanism for the upper wall part.

To further increase occupational safety, it is advantageous according to an embodiment of the invention that an erectable parapet element is provided on the catwalk and / or a ceiling region of the housing. The parapet element
For example, it may be provided on the side wall element in order to increase or additionally secure it. Also, the deployable parapet element may be provided on the front sides of the catwalk. The deployable parapet element may comprise a folding or pivoting mechanism with rod-shaped elements or pull-out shut-off ropes or barrier chains. A parapet element on the ceiling area can additionally protect the work space formed.

If, when the access wall is open, the housing opening does not immediately adjoin a driver's cab or an existing loading area of the superstructure, one or more further extension elements can be provided. This pull-out element may be a mere movable bottom plate, which is displaceable between a retraction position in which the extension bottom is retracted into the housing, and a pull-out position. In the pull-out position, the pull-out bottom can adjoin another formed catwalk on the housing opening. It is also possible to provide deployable and in particular fold-out parapet elements. Of course, in the presence of a distance space from the catwalk, floor panels can also be unfolded or laid on in other ways.

The invention further comprises a construction machine with a superstructure and an undercarriage, which is designed as a chassis, wherein the construction machine is characterized in that the superstructure is formed according to the above-described invention. The construction machine is in particular a construction machine for civil engineering, in particular a Erdbohrgerät, a vibrator or a ram, as they are used in particular for special civil engineering. The undercarriage may be provided with caterpillars or wheels.

Fig. 1

eine erste perspektivische Ansicht eines erfindungsgemäßen Oberwagens mit geschlossenen Zugangswänden;

Fig. 2

eine weitere perspektivische Ansicht des Oberwagens nach Fig. 1 mit geschlossenen Zugangswänden;

Fig. 3

eine perspektivische Ansicht des Oberwagens gemäß Fig. 1 mit geöffneten Zugangswänden;

Fig. 4

eine perspektivische Ansicht des Oberwagens gemäß Fig. 2 mit geöffneten Zugangswänden; und

Fig. 5

der Oberwagen gemäß Ansicht von Fig. 4 mit zusätzlich geöffneter Tür.

The invention will be further explained with reference to a preferred embodiment, which is shown schematically in the accompanying drawings. In the drawings show:

Fig. 1

a first perspective view of a superstructure according to the invention with closed access walls;

Fig. 2

another perspective view of the superstructure after Fig. 1 with closed access walls;

Fig. 3

a perspective view of the upper carriage according to Fig. 1 with opened access walls;

Fig. 4

a perspective view of the upper carriage according to Fig. 2 with opened access walls; and

Fig. 5

the superstructure according to the view of Fig. 4 with additionally opened door.

An inventive superstructure 10 in a closed state, ie with closed access walls 30 is in the FIGS. 1 and 2 shown. The uppercarriage 10 comprises a box-like housing 12 which is supported by a base frame 14. The box-type housing 12 comprises side walls 20 which are closed at the top by a ceiling area 18. The side walls 20 have opening access walls 30, which will be explained in more detail below.

At a front side of the superstructure 10, a driver's cab 16 is arranged, as it is known for a variety of construction equipment, especially earth drilling equipment.

The illustrated superstructure 10 is shown largely without attachments for reasons of clarity. In a central region of the housing 12 winches and a mast can be mounted. Within the housing 12 a variety of drive and control components can be accommodated, in particular a diesel engine, hydraulic pumps and an essential part of the machine control.

The superstructure 10 is mounted on an undercarriage, in particular a crawler chassis. Due to the considerable size of such underweight construction equipment access to the housing 12 from the outside is not readily possible. The access walls 30 can from one in the FIGS. 1 and 2 shown closure position in an open position according to the FIGS. 3 to 5 be adjusted. According to the invention, horizontally extendable or displaceable pull-out elements 50 are provided. The pull-out elements 50 have a bottom plate 52, which in the larger access walls 30 by means of ball-bearing telescopic rails 54 are provided for horizontal method. A horizontal method can be moved by hand or by an adjusting mechanism, which may have tension springs, a drive motor or an actuating cylinder.

By opening the access walls 30, a housing opening 22 on the housing 12 is effected. For a secure access to the housing opening 22, the substantially vertical access walls 30 have a lower side wall element 56, which is fixedly arranged on the telescopic rails 54. On the telescopic rails 54, a grid-like base plate 52 is arranged in the illustrated embodiment, in each case. In this embodiment, simultaneously with the opening of the housing 12 by pushing out the side wall member 56, the bottom plate extended to form a catwalk.

An upper wall element 32 of the access wall 30 is pivotally mounted on a ceiling portion 18, so that it is pivotable to increase the housing opening 22 upwards. The upper wall element 32 may preferably be fixed in an inclined position, so that the upper wall element 32 forms a protective roof over the open working space on the housing 12. This is particularly advantageous in bad weather conditions.

The solid sidewall member 56 simultaneously forms a parapet in the extended position. This can, as in particular from Fig. 4 can be seen on the inside of the side wall member 56, a stiffening frame 58 may be provided.

As a further precautionary measure, a fold-out or erectable parapet element 18 can be constructed on the ceiling area 18 above the housing opening 22. The parapet element 18 ensures that, in particular, no persons fall into the open working space.

In the area of the driver's cab 16 as well as on an area with a conductor 24 to the ceiling area 18, the pullout element 50 can be designed as a simply extendable base plate 52. Through the adjoining floor panels 52, a continuous catwalk 60 can be formed. In the region of the conductors 24, a side wall 20 may be formed as a door element 26, which is pivotable about hinges 28 about a vertical pivot axis. After completion of the maintenance or Operating work, the pull-out elements 50 without much effort motor or manually from the extended position back to the retracted position according to the FIGS. 1 and 2 be reset. In this retracted retraction position, in particular, the bottom plates 52 are protected against contamination or damage.

Claims (8)

1. Upper carriage for a construction machine with a box-like housing (12) having essentially vertical side walls (20), wherein for access to the housing (12) at least one housing opening (22) with an access wall (30) is provided, which is adjustable by means of an adjustment mechanism into an open position, and in an area in front of the housing opening (22) a horizontal gangway (60) is formed, wherein

   - on at least one side wall (20) at least one pull-out element (50) is provided, which can be pulled out horizontally between a retracted position and a pulled out position, in which the pull-out element (50) projects horizontally from the housing (12), and

   - in order to form the gangway (60) a base plate (52) is provided on the pull-out element (50),

   charcterized in that

   - the access wall (30) is built from several side wall elements (32, 56),

   - in that the pull-out element (50) has a first side wall element (56) which forms a part of the access wall (30),

   - in that in order to form the access wall (30) provision is made above the first side wall element (56) for an upper second side wall element (32) which, for example for opening, is slidably or foldably supported in vertical upward direction, and

   - in that in the open position a protective roof is formed above the gangway (60) by the upper second wall element (32) or a railing element is formed on the ceiling area (18).
2. Upper carriage according to claim 1,
   characterized in that
   for horizontal displacement at least two telescopic rails (54) are provided.
3. Upper carriage according to claim 1 or 2,
   characterized in that
   the base plate (52) is attached to the telescopic rails (54) and can be moved out when the pull-out element (50) is being drawn out.
4. Upper carriage according to claim 1 or 2,
   characterized in that
   the base plate (52) can be attached to the pull-out element (50) after this has been drawn out.
5. Upper carriage according to any one of claims 1 to 4,
   characterized in that
   on the gangway (60) and/or a ceiling area (18) of the housing (12) a mountable railing element (40) is provided.
6. Upper carriage according to any one of claims 1 to 5,
   characterized in that
   on the housing (12) several pull-out elements (50) are provided.
7. Construction machine having an upper carriage (10) and an undercarriage which is designed as a running gear,
   characterized in that
   the upper carriage (10) is designed according to any one of claims 1 to 6.
8. Construction machine according to claim 1,
   characterized in that
   the upper carriage (10) is supported on an undercarriage which has a crawler chassis.

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